CVE-2023-44378

Name: CVE-2023-44378
Creator: NVD / NIST
Published: 2023-10-09T14:15:10.873+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2023-44378 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. gnark is a zk-SNARK library that offers a high-level API to design circuits. Prior to version 0.9.0, for some in-circuit values, it is possible to construct two valid decomposition to bits. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

gnark is a zk-SNARK library that offers a high-level API to design circuits. Prior to version 0.9.0, for some in-circuit values, it is possible to construct two valid decomposition to bits. In addition to the canonical decomposition of `a`, for small values there exists a second decomposition for `a+r` (where `r` is the modulus the values are being reduced by). The second decomposition was possible due to overflowing the field where the values are defined. Upgrading to version 0.9.0 should fix the issue without needing to change the calls to value comparison methods.

Metrics

CVSS 3.1

5.5/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

EPSS Probability

0.22%

12.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Consensys	Gnark	< 0.9.0

References

https://github.com/Consensys/gnark/commit/59a4087261a6c73f13e80d695c17b398c3d0934fPatch
https://github.com/Consensys/gnark/security/advisories/GHSA-498w-5j49-vqjgMitigation, Patch, Third Party Advisory
https://github.com/zkopru-network/zkopru/issues/116Not Applicable
https://github.com/Consensys/gnark/commit/59a4087261a6c73f13e80d695c17b398c3d0934fPatch
https://github.com/Consensys/gnark/security/advisories/GHSA-498w-5j49-vqjgMitigation, Patch, Third Party Advisory
https://github.com/zkopru-network/zkopru/issues/116Not Applicable

Timeline

Published: Oct 9, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-44378?

How severe is CVE-2023-44378?

CVE-2023-44378 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2023-44378?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-44378?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST